April Challenge 2016
Help Watson Escape, Chef and Ballons, Chef And Magical Path, Chef And Coloring
July Challenge 2016
Andrash and Stipendium, Chefland and Electricity
September Challenge 2016
Chef and digits of a number, Faded Palindromes, Chef and calculation
November Challenge 2016
Count Permutations, Task for Alexey, Chef and squares
February Challenge 2017
Gerrymander, Most Frequent Element, Chef and Triangles, Chef and His Apartment Dues
September Challenge 2017
Chef and Pick Digit, Minimum Good Permutation, Little Chef and Sums
August Lunchtime 2017
Mathison and the Dynamo shuffle, Mathison and pangrams
March Challenge 2018 DIV 2
Chef and Glove, Mix the Colors, A Big Sale
June Challenge 2019 Division 2
Road Signs, Chef and Proxy
August Challenge 2019 Division 2
Dilemma, Football, Distribute Apples
July Challenge 2020 Division 2
Chef and Card Game, Chef and Strings
India